| /** |
| * Copyright (C) 1997 Martin Jones (mjones@kde.org) |
| * (C) 1997 Torben Weis (weis@kde.org) |
| * (C) 1998 Waldo Bastian (bastian@kde.org) |
| * (C) 1999 Lars Knoll (knoll@kde.org) |
| * (C) 1999 Antti Koivisto (koivisto@kde.org) |
| * Copyright (C) 2003, 2004, 2005, 2006, 2007 Apple Inc. All rights reserved. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| #include "config.h" |
| #include "RenderTableCell.h" |
| |
| #include "GraphicsContext.h" |
| #include "HTMLNames.h" |
| #include "HTMLTableCellElement.h" |
| #include "RenderTableCol.h" |
| #include "RenderView.h" |
| #include "TextStream.h" |
| |
| using namespace std; |
| |
| namespace WebCore { |
| |
| using namespace HTMLNames; |
| |
| RenderTableCell::RenderTableCell(Node* node) |
| : RenderBlock(node) |
| , m_row(-1) |
| , m_column(-1) |
| , m_rowSpan(1) |
| , m_columnSpan(1) |
| , m_topExtra(0) |
| , m_bottomExtra(0) |
| , m_widthChanged(false) |
| , m_percentageHeight(0) |
| { |
| updateFromElement(); |
| } |
| |
| void RenderTableCell::destroy() |
| { |
| RenderTableSection* recalcSection = parent() ? section() : 0; |
| |
| RenderBlock::destroy(); |
| |
| if (recalcSection) |
| recalcSection->setNeedsCellRecalc(); |
| } |
| |
| void RenderTableCell::updateFromElement() |
| { |
| Node* node = element(); |
| if (node && (node->hasTagName(tdTag) || node->hasTagName(thTag))) { |
| HTMLTableCellElement* tc = static_cast<HTMLTableCellElement*>(node); |
| int oldRSpan = m_rowSpan; |
| int oldCSpan = m_columnSpan; |
| |
| m_columnSpan = tc->colSpan(); |
| m_rowSpan = tc->rowSpan(); |
| if ((oldRSpan != m_rowSpan || oldCSpan != m_columnSpan) && style() && parent()) { |
| setNeedsLayoutAndPrefWidthsRecalc(); |
| if (section()) |
| section()->setNeedsCellRecalc(); |
| } |
| } |
| } |
| |
| Length RenderTableCell::styleOrColWidth() const |
| { |
| Length w = style()->width(); |
| if (colSpan() > 1 || !w.isAuto()) |
| return w; |
| RenderTableCol* tableCol = table()->colElement(col()); |
| if (tableCol) { |
| w = tableCol->style()->width(); |
| |
| // Column widths specified on <col> apply to the border box of the cell. |
| // Percentages don't need to be handled since they're always treated this way (even when specified on the cells). |
| // See Bugzilla bug 8126 for details. |
| if (w.isFixed() && w.value() > 0) |
| w = Length(max(0, w.value() - borderLeft() - borderRight() - paddingLeft() - paddingRight()), Fixed); |
| } |
| return w; |
| } |
| |
| void RenderTableCell::calcPrefWidths() |
| { |
| // The child cells rely on the grids up in the sections to do their calcPrefWidths work. Normally the sections are set up early, as table |
| // cells are added, but relayout can cause the cells to be freed, leaving stale pointers in the sections' |
| // grids. We must refresh those grids before the child cells try to use them. |
| table()->recalcSectionsIfNeeded(); |
| |
| RenderBlock::calcPrefWidths(); |
| if (element() && style()->autoWrap()) { |
| // See if nowrap was set. |
| Length w = styleOrColWidth(); |
| String nowrap = static_cast<Element*>(element())->getAttribute(nowrapAttr); |
| if (!nowrap.isNull() && w.isFixed()) |
| // Nowrap is set, but we didn't actually use it because of the |
| // fixed width set on the cell. Even so, it is a WinIE/Moz trait |
| // to make the minwidth of the cell into the fixed width. They do this |
| // even in strict mode, so do not make this a quirk. Affected the top |
| // of hiptop.com. |
| m_minPrefWidth = max(w.value(), m_minPrefWidth); |
| } |
| } |
| |
| void RenderTableCell::calcWidth() |
| { |
| } |
| |
| void RenderTableCell::setWidth(int width) |
| { |
| if (width != m_width) { |
| m_width = width; |
| m_widthChanged = true; |
| } |
| } |
| |
| void RenderTableCell::layout() |
| { |
| layoutBlock(m_widthChanged); |
| m_widthChanged = false; |
| } |
| |
| IntRect RenderTableCell::absoluteClippedOverflowRect() |
| { |
| // If the table grid is dirty, we cannot get reliable information about adjoining cells, |
| // so we ignore outside borders. This should not be a problem because it means that |
| // the table is going to recalculate the grid, relayout and repaint its current rect, which |
| // includes any outside borders of this cell. |
| if (table()->collapseBorders() && !table()->needsSectionRecalc()) { |
| bool rtl = table()->style()->direction() == RTL; |
| int outlineSize = style()->outlineSize(); |
| int left = max(borderHalfLeft(true), outlineSize); |
| int right = max(borderHalfRight(true), outlineSize); |
| int top = max(borderHalfTop(true), outlineSize); |
| int bottom = max(borderHalfBottom(true), outlineSize); |
| if (left && !rtl || right && rtl) { |
| if (RenderTableCell* before = table()->cellBefore(this)) { |
| top = max(top, before->borderHalfTop(true)); |
| bottom = max(bottom, before->borderHalfBottom(true)); |
| } |
| } |
| if (left && rtl || right && !rtl) { |
| if (RenderTableCell* after = table()->cellAfter(this)) { |
| top = max(top, after->borderHalfTop(true)); |
| bottom = max(bottom, after->borderHalfBottom(true)); |
| } |
| } |
| if (top) { |
| if (RenderTableCell* above = table()->cellAbove(this)) { |
| left = max(left, above->borderHalfLeft(true)); |
| right = max(right, above->borderHalfRight(true)); |
| } |
| } |
| if (bottom) { |
| if (RenderTableCell* below = table()->cellBelow(this)) { |
| left = max(left, below->borderHalfLeft(true)); |
| right = max(right, below->borderHalfRight(true)); |
| } |
| } |
| left = max(left, -overflowLeft(false)); |
| top = max(top, -overflowTop(false) - borderTopExtra()); |
| IntRect r(-left, -borderTopExtra() - top, left + max(width() + right, overflowWidth(false)), borderTopExtra() + top + max(height() + bottom + borderBottomExtra(), overflowHeight(false))); |
| |
| if (RenderView* v = view()) |
| r.move(v->layoutDelta()); |
| |
| computeAbsoluteRepaintRect(r); |
| return r; |
| } |
| return RenderBlock::absoluteClippedOverflowRect(); |
| } |
| |
| void RenderTableCell::computeAbsoluteRepaintRect(IntRect& r, bool fixed) |
| { |
| r.setY(r.y() + m_topExtra); |
| RenderView* v = view(); |
| if (!v || !v->layoutState()) |
| r.move(-parent()->xPos(), -parent()->yPos()); // Rows are in the same coordinate space, so don't add their offset in. |
| RenderBlock::computeAbsoluteRepaintRect(r, fixed); |
| } |
| |
| bool RenderTableCell::absolutePosition(int& xPos, int& yPos, bool fixed) const |
| { |
| bool result = RenderBlock::absolutePosition(xPos, yPos, fixed); |
| RenderView* v = view(); |
| if (!v || !v->layoutState()) { |
| xPos -= parent()->xPos(); // Rows are in the same coordinate space, so don't add their offset in. |
| yPos -= parent()->yPos(); |
| } |
| return result; |
| } |
| |
| short RenderTableCell::baselinePosition(bool /*firstLine*/, bool /*isRootLineBox*/) const |
| { |
| RenderObject* o = firstChild(); |
| int offset = paddingTop() + borderTop(); |
| |
| if (!o) |
| return offset + contentHeight(); |
| while (o->firstChild() && !o->isReplaced()) { |
| if (!o->isInline()) |
| offset += o->paddingTop() + o->borderTop(); |
| o = o->firstChild(); |
| } |
| |
| if (!o->isInline()) |
| return paddingTop() + borderTop() + contentHeight(); |
| |
| offset += o->baselinePosition(true); |
| return offset; |
| } |
| |
| void RenderTableCell::setStyle(RenderStyle* newStyle) |
| { |
| if (parent() && section() && style() && style()->height() != newStyle->height()) |
| section()->setNeedsCellRecalc(); |
| |
| newStyle->setDisplay(TABLE_CELL); |
| |
| if (newStyle->whiteSpace() == KHTML_NOWRAP) { |
| // Figure out if we are really nowrapping or if we should just |
| // use normal instead. If the width of the cell is fixed, then |
| // we don't actually use NOWRAP. |
| if (newStyle->width().isFixed()) |
| newStyle->setWhiteSpace(NORMAL); |
| else |
| newStyle->setWhiteSpace(NOWRAP); |
| } |
| |
| RenderBlock::setStyle(newStyle); |
| setHasBoxDecorations(true); |
| } |
| |
| bool RenderTableCell::requiresLayer() |
| { |
| return isPositioned() || isTransparent() || hasOverflowClip() || hasTransform(); |
| } |
| |
| // The following rules apply for resolving conflicts and figuring out which border |
| // to use. |
| // (1) Borders with the 'border-style' of 'hidden' take precedence over all other conflicting |
| // borders. Any border with this value suppresses all borders at this location. |
| // (2) Borders with a style of 'none' have the lowest priority. Only if the border properties of all |
| // the elements meeting at this edge are 'none' will the border be omitted (but note that 'none' is |
| // the default value for the border style.) |
| // (3) If none of the styles are 'hidden' and at least one of them is not 'none', then narrow borders |
| // are discarded in favor of wider ones. If several have the same 'border-width' then styles are preferred |
| // in this order: 'double', 'solid', 'dashed', 'dotted', 'ridge', 'outset', 'groove', and the lowest: 'inset'. |
| // (4) If border styles differ only in color, then a style set on a cell wins over one on a row, |
| // which wins over a row group, column, column group and, lastly, table. It is undefined which color |
| // is used when two elements of the same type disagree. |
| static CollapsedBorderValue compareBorders(const CollapsedBorderValue& border1, const CollapsedBorderValue& border2) |
| { |
| // Sanity check the values passed in. If either is null, return the other. |
| if (!border2.exists()) |
| return border1; |
| if (!border1.exists()) |
| return border2; |
| |
| // Rule #1 above. |
| if (border1.style() == BHIDDEN || border2.style() == BHIDDEN) |
| return CollapsedBorderValue(); // No border should exist at this location. |
| |
| // Rule #2 above. A style of 'none' has lowest priority and always loses to any other border. |
| if (border2.style() == BNONE) |
| return border1; |
| if (border1.style() == BNONE) |
| return border2; |
| |
| // The first part of rule #3 above. Wider borders win. |
| if (border1.width() != border2.width()) |
| return border1.width() > border2.width() ? border1 : border2; |
| |
| // The borders have equal width. Sort by border style. |
| if (border1.style() != border2.style()) |
| return border1.style() > border2.style() ? border1 : border2; |
| |
| // The border have the same width and style. Rely on precedence (cell over row over row group, etc.) |
| return border1.precedence >= border2.precedence ? border1 : border2; |
| } |
| |
| CollapsedBorderValue RenderTableCell::collapsedLeftBorder(bool rtl) const |
| { |
| RenderTable* tableElt = table(); |
| bool leftmostColumn; |
| if (!rtl) |
| leftmostColumn = col() == 0; |
| else { |
| int effCol = tableElt->colToEffCol(col() + colSpan() - 1); |
| leftmostColumn = effCol == tableElt->numEffCols() - 1; |
| } |
| |
| // For border left, we need to check, in order of precedence: |
| // (1) Our left border. |
| CollapsedBorderValue result(&style()->borderLeft(), BCELL); |
| |
| // (2) The right border of the cell to the left. |
| RenderTableCell* prevCell = rtl ? tableElt->cellAfter(this) : tableElt->cellBefore(this); |
| if (prevCell) { |
| result = compareBorders(result, CollapsedBorderValue(&prevCell->style()->borderRight(), BCELL)); |
| if (!result.exists()) |
| return result; |
| } else if (leftmostColumn) { |
| // (3) Our row's left border. |
| result = compareBorders(result, CollapsedBorderValue(&parent()->style()->borderLeft(), BROW)); |
| if (!result.exists()) |
| return result; |
| |
| // (4) Our row group's left border. |
| result = compareBorders(result, CollapsedBorderValue(§ion()->style()->borderLeft(), BROWGROUP)); |
| if (!result.exists()) |
| return result; |
| } |
| |
| // (5) Our column and column group's left borders. |
| bool startColEdge; |
| bool endColEdge; |
| RenderTableCol* colElt = tableElt->colElement(col() + (rtl ? colSpan() - 1 : 0), &startColEdge, &endColEdge); |
| if (colElt && (!rtl ? startColEdge : endColEdge)) { |
| result = compareBorders(result, CollapsedBorderValue(&colElt->style()->borderLeft(), BCOL)); |
| if (!result.exists()) |
| return result; |
| if (colElt->parent()->isTableCol() && (!rtl ? !colElt->previousSibling() : !colElt->nextSibling())) { |
| result = compareBorders(result, CollapsedBorderValue(&colElt->parent()->style()->borderLeft(), BCOLGROUP)); |
| if (!result.exists()) |
| return result; |
| } |
| } |
| |
| // (6) The right border of the column to the left. |
| if (!leftmostColumn) { |
| colElt = tableElt->colElement(col() + (rtl ? colSpan() : -1), &startColEdge, &endColEdge); |
| if (colElt && (!rtl ? endColEdge : startColEdge)) { |
| result = compareBorders(result, CollapsedBorderValue(&colElt->style()->borderRight(), BCOL)); |
| if (!result.exists()) |
| return result; |
| } |
| } else { |
| // (7) The table's left border. |
| result = compareBorders(result, CollapsedBorderValue(&tableElt->style()->borderLeft(), BTABLE)); |
| if (!result.exists()) |
| return result; |
| } |
| |
| return result; |
| } |
| |
| CollapsedBorderValue RenderTableCell::collapsedRightBorder(bool rtl) const |
| { |
| RenderTable* tableElt = table(); |
| bool rightmostColumn; |
| if (rtl) |
| rightmostColumn = col() == 0; |
| else { |
| int effCol = tableElt->colToEffCol(col() + colSpan() - 1); |
| rightmostColumn = effCol == tableElt->numEffCols() - 1; |
| } |
| |
| // For border right, we need to check, in order of precedence: |
| // (1) Our right border. |
| CollapsedBorderValue result = CollapsedBorderValue(&style()->borderRight(), BCELL); |
| |
| // (2) The left border of the cell to the right. |
| if (!rightmostColumn) { |
| RenderTableCell* nextCell = rtl ? tableElt->cellBefore(this) : tableElt->cellAfter(this); |
| if (nextCell && nextCell->style()) { |
| result = compareBorders(result, CollapsedBorderValue(&nextCell->style()->borderLeft(), BCELL)); |
| if (!result.exists()) |
| return result; |
| } |
| } else { |
| // (3) Our row's right border. |
| result = compareBorders(result, CollapsedBorderValue(&parent()->style()->borderRight(), BROW)); |
| if (!result.exists()) |
| return result; |
| |
| // (4) Our row group's right border. |
| result = compareBorders(result, CollapsedBorderValue(§ion()->style()->borderRight(), BROWGROUP)); |
| if (!result.exists()) |
| return result; |
| } |
| |
| // (5) Our column and column group's right borders. |
| bool startColEdge; |
| bool endColEdge; |
| RenderTableCol* colElt = tableElt->colElement(col() + (rtl ? 0 : colSpan() - 1), &startColEdge, &endColEdge); |
| if (colElt && (!rtl ? endColEdge : startColEdge)) { |
| result = compareBorders(result, CollapsedBorderValue(&colElt->style()->borderRight(), BCOL)); |
| if (!result.exists()) |
| return result; |
| if (colElt->parent()->isTableCol() && (!rtl ? !colElt->nextSibling() : !colElt->previousSibling())) { |
| result = compareBorders(result, CollapsedBorderValue(&colElt->parent()->style()->borderRight(), BCOLGROUP)); |
| if (!result.exists()) |
| return result; |
| } |
| } |
| |
| // (6) The left border of the column to the right. |
| if (!rightmostColumn) { |
| colElt = tableElt->colElement(col() + (rtl ? -1 : colSpan()), &startColEdge, &endColEdge); |
| if (colElt && (!rtl ? startColEdge : endColEdge)) { |
| result = compareBorders(result, CollapsedBorderValue(&colElt->style()->borderLeft(), BCOL)); |
| if (!result.exists()) |
| return result; |
| } |
| } else { |
| // (7) The table's right border. |
| result = compareBorders(result, CollapsedBorderValue(&tableElt->style()->borderRight(), BTABLE)); |
| if (!result.exists()) |
| return result; |
| } |
| |
| return result; |
| } |
| |
| CollapsedBorderValue RenderTableCell::collapsedTopBorder() const |
| { |
| // For border top, we need to check, in order of precedence: |
| // (1) Our top border. |
| CollapsedBorderValue result = CollapsedBorderValue(&style()->borderTop(), BCELL); |
| |
| RenderTableCell* prevCell = table()->cellAbove(this); |
| if (prevCell) { |
| // (2) A previous cell's bottom border. |
| result = compareBorders(result, CollapsedBorderValue(&prevCell->style()->borderBottom(), BCELL)); |
| if (!result.exists()) |
| return result; |
| } |
| |
| // (3) Our row's top border. |
| result = compareBorders(result, CollapsedBorderValue(&parent()->style()->borderTop(), BROW)); |
| if (!result.exists()) |
| return result; |
| |
| // (4) The previous row's bottom border. |
| if (prevCell) { |
| RenderObject* prevRow = 0; |
| if (prevCell->section() == section()) |
| prevRow = parent()->previousSibling(); |
| else |
| prevRow = prevCell->section()->lastChild(); |
| |
| if (prevRow) { |
| result = compareBorders(result, CollapsedBorderValue(&prevRow->style()->borderBottom(), BROW)); |
| if (!result.exists()) |
| return result; |
| } |
| } |
| |
| // Now check row groups. |
| RenderTableSection* currSection = section(); |
| if (!row()) { |
| // (5) Our row group's top border. |
| result = compareBorders(result, CollapsedBorderValue(&currSection->style()->borderTop(), BROWGROUP)); |
| if (!result.exists()) |
| return result; |
| |
| // (6) Previous row group's bottom border. |
| currSection = table()->sectionAbove(currSection); |
| if (currSection) { |
| result = compareBorders(result, CollapsedBorderValue(&currSection->style()->borderBottom(), BROWGROUP)); |
| if (!result.exists()) |
| return result; |
| } |
| } |
| |
| if (!currSection) { |
| // (8) Our column and column group's top borders. |
| RenderTableCol* colElt = table()->colElement(col()); |
| if (colElt) { |
| result = compareBorders(result, CollapsedBorderValue(&colElt->style()->borderTop(), BCOL)); |
| if (!result.exists()) |
| return result; |
| if (colElt->parent()->isTableCol()) { |
| result = compareBorders(result, CollapsedBorderValue(&colElt->parent()->style()->borderTop(), BCOLGROUP)); |
| if (!result.exists()) |
| return result; |
| } |
| } |
| |
| // (9) The table's top border. |
| result = compareBorders(result, CollapsedBorderValue(&table()->style()->borderTop(), BTABLE)); |
| if (!result.exists()) |
| return result; |
| } |
| |
| return result; |
| } |
| |
| CollapsedBorderValue RenderTableCell::collapsedBottomBorder() const |
| { |
| // For border top, we need to check, in order of precedence: |
| // (1) Our bottom border. |
| CollapsedBorderValue result = CollapsedBorderValue(&style()->borderBottom(), BCELL); |
| |
| RenderTableCell* nextCell = table()->cellBelow(this); |
| if (nextCell) { |
| // (2) A following cell's top border. |
| result = compareBorders(result, CollapsedBorderValue(&nextCell->style()->borderTop(), BCELL)); |
| if (!result.exists()) |
| return result; |
| } |
| |
| // (3) Our row's bottom border. (FIXME: Deal with rowspan!) |
| result = compareBorders(result, CollapsedBorderValue(&parent()->style()->borderBottom(), BROW)); |
| if (!result.exists()) |
| return result; |
| |
| // (4) The next row's top border. |
| if (nextCell) { |
| result = compareBorders(result, CollapsedBorderValue(&nextCell->parent()->style()->borderTop(), BROW)); |
| if (!result.exists()) |
| return result; |
| } |
| |
| // Now check row groups. |
| RenderTableSection* currSection = section(); |
| if (row() + rowSpan() >= static_cast<RenderTableSection*>(currSection)->numRows()) { |
| // (5) Our row group's bottom border. |
| result = compareBorders(result, CollapsedBorderValue(&currSection->style()->borderBottom(), BROWGROUP)); |
| if (!result.exists()) |
| return result; |
| |
| // (6) Following row group's top border. |
| currSection = table()->sectionBelow(currSection); |
| if (currSection) { |
| result = compareBorders(result, CollapsedBorderValue(&currSection->style()->borderTop(), BROWGROUP)); |
| if (!result.exists()) |
| return result; |
| } |
| } |
| |
| if (!currSection) { |
| // (8) Our column and column group's bottom borders. |
| RenderTableCol* colElt = table()->colElement(col()); |
| if (colElt) { |
| result = compareBorders(result, CollapsedBorderValue(&colElt->style()->borderBottom(), BCOL)); |
| if (!result.exists()) return result; |
| if (colElt->parent()->isTableCol()) { |
| result = compareBorders(result, CollapsedBorderValue(&colElt->parent()->style()->borderBottom(), BCOLGROUP)); |
| if (!result.exists()) |
| return result; |
| } |
| } |
| |
| // (9) The table's bottom border. |
| result = compareBorders(result, CollapsedBorderValue(&table()->style()->borderBottom(), BTABLE)); |
| if (!result.exists()) |
| return result; |
| } |
| |
| return result; |
| } |
| |
| int RenderTableCell::borderLeft() const |
| { |
| return table()->collapseBorders() ? borderHalfLeft(false) : RenderBlock::borderLeft(); |
| } |
| |
| int RenderTableCell::borderRight() const |
| { |
| return table()->collapseBorders() ? borderHalfRight(false) : RenderBlock::borderRight(); |
| } |
| |
| int RenderTableCell::borderTop() const |
| { |
| return table()->collapseBorders() ? borderHalfTop(false) : RenderBlock::borderTop(); |
| } |
| |
| int RenderTableCell::borderBottom() const |
| { |
| return table()->collapseBorders() ? borderHalfBottom(false) : RenderBlock::borderBottom(); |
| } |
| |
| int RenderTableCell::borderHalfLeft(bool outer) const |
| { |
| CollapsedBorderValue border = collapsedLeftBorder(table()->style()->direction() == RTL); |
| if (border.exists()) |
| return (border.width() + (outer ? 0 : 1)) / 2; // Give the extra pixel to top and left. |
| return 0; |
| } |
| |
| int RenderTableCell::borderHalfRight(bool outer) const |
| { |
| CollapsedBorderValue border = collapsedRightBorder(table()->style()->direction() == RTL); |
| if (border.exists()) |
| return (border.width() + (outer ? 1 : 0)) / 2; |
| return 0; |
| } |
| |
| int RenderTableCell::borderHalfTop(bool outer) const |
| { |
| CollapsedBorderValue border = collapsedTopBorder(); |
| if (border.exists()) |
| return (border.width() + (outer ? 0 : 1)) / 2; // Give the extra pixel to top and left. |
| return 0; |
| } |
| |
| int RenderTableCell::borderHalfBottom(bool outer) const |
| { |
| CollapsedBorderValue border = collapsedBottomBorder(); |
| if (border.exists()) |
| return (border.width() + (outer ? 1 : 0)) / 2; |
| return 0; |
| } |
| |
| void RenderTableCell::paint(PaintInfo& paintInfo, int tx, int ty) |
| { |
| tx += m_x; |
| ty += m_y; |
| |
| // check if we need to do anything at all... |
| int os = 2 * maximalOutlineSize(paintInfo.phase); |
| |
| if (paintInfo.phase == PaintPhaseCollapsedTableBorders && style()->visibility() == VISIBLE) { |
| if (ty - table()->outerBorderTop() >= paintInfo.rect.bottom() + os || |
| ty + m_topExtra + m_height + m_bottomExtra + table()->outerBorderBottom() <= paintInfo.rect.y() - os) |
| return; |
| int w = width(); |
| int h = height() + borderTopExtra() + borderBottomExtra(); |
| paintCollapsedBorder(paintInfo.context, tx, ty, w, h); |
| } else { |
| if (ty + overflowTop(false) >= paintInfo.rect.bottom() + os || ty + m_topExtra + overflowHeight(false) + m_bottomExtra <= paintInfo.rect.y() - os) |
| return; |
| RenderBlock::paintObject(paintInfo, tx, ty + m_topExtra); |
| } |
| } |
| |
| static EBorderStyle collapsedBorderStyle(EBorderStyle style) |
| { |
| if (style == OUTSET) |
| return GROOVE; |
| if (style == INSET) |
| return RIDGE; |
| return style; |
| } |
| |
| struct CollapsedBorder { |
| CollapsedBorderValue borderValue; |
| RenderObject::BorderSide side; |
| bool shouldPaint; |
| int x1; |
| int y1; |
| int x2; |
| int y2; |
| EBorderStyle style; |
| }; |
| |
| class CollapsedBorders { |
| public: |
| CollapsedBorders() |
| : m_count(0) |
| { |
| } |
| |
| void addBorder(const CollapsedBorderValue& borderValue, RenderObject::BorderSide borderSide, bool shouldPaint, |
| int x1, int y1, int x2, int y2, EBorderStyle borderStyle) |
| { |
| if (borderValue.exists() && shouldPaint) { |
| m_borders[m_count].borderValue = borderValue; |
| m_borders[m_count].side = borderSide; |
| m_borders[m_count].shouldPaint = shouldPaint; |
| m_borders[m_count].x1 = x1; |
| m_borders[m_count].x2 = x2; |
| m_borders[m_count].y1 = y1; |
| m_borders[m_count].y2 = y2; |
| m_borders[m_count].style = borderStyle; |
| m_count++; |
| } |
| } |
| |
| CollapsedBorder* nextBorder() |
| { |
| for (int i = 0; i < m_count; i++) { |
| if (m_borders[i].borderValue.exists() && m_borders[i].shouldPaint) { |
| m_borders[i].shouldPaint = false; |
| return &m_borders[i]; |
| } |
| } |
| |
| return 0; |
| } |
| |
| CollapsedBorder m_borders[4]; |
| int m_count; |
| }; |
| |
| static void addBorderStyle(RenderTableCell::CollapsedBorderStyles& borderStyles, CollapsedBorderValue borderValue) |
| { |
| if (!borderValue.exists()) |
| return; |
| size_t count = borderStyles.size(); |
| for (size_t i = 0; i < count; ++i) |
| if (borderStyles[i] == borderValue) |
| return; |
| borderStyles.append(borderValue); |
| } |
| |
| void RenderTableCell::collectBorderStyles(CollapsedBorderStyles& borderStyles) const |
| { |
| bool rtl = table()->style()->direction() == RTL; |
| addBorderStyle(borderStyles, collapsedLeftBorder(rtl)); |
| addBorderStyle(borderStyles, collapsedRightBorder(rtl)); |
| addBorderStyle(borderStyles, collapsedTopBorder()); |
| addBorderStyle(borderStyles, collapsedBottomBorder()); |
| } |
| |
| static int compareBorderStylesForQSort(const void* pa, const void* pb) |
| { |
| const CollapsedBorderValue* a = static_cast<const CollapsedBorderValue*>(pa); |
| const CollapsedBorderValue* b = static_cast<const CollapsedBorderValue*>(pb); |
| if (*a == *b) |
| return 0; |
| CollapsedBorderValue borderWithHigherPrecedence = compareBorders(*a, *b); |
| if (*a == borderWithHigherPrecedence) |
| return 1; |
| return -1; |
| } |
| |
| void RenderTableCell::sortBorderStyles(CollapsedBorderStyles& borderStyles) |
| { |
| qsort(borderStyles.data(), borderStyles.size(), sizeof(CollapsedBorderValue), |
| compareBorderStylesForQSort); |
| } |
| |
| void RenderTableCell::paintCollapsedBorder(GraphicsContext* graphicsContext, int tx, int ty, int w, int h) |
| { |
| if (!table()->currentBorderStyle()) |
| return; |
| |
| bool rtl = table()->style()->direction() == RTL; |
| CollapsedBorderValue leftVal = collapsedLeftBorder(rtl); |
| CollapsedBorderValue rightVal = collapsedRightBorder(rtl); |
| CollapsedBorderValue topVal = collapsedTopBorder(); |
| CollapsedBorderValue bottomVal = collapsedBottomBorder(); |
| |
| // Adjust our x/y/width/height so that we paint the collapsed borders at the correct location. |
| int topWidth = topVal.width(); |
| int bottomWidth = bottomVal.width(); |
| int leftWidth = leftVal.width(); |
| int rightWidth = rightVal.width(); |
| |
| tx -= leftWidth / 2; |
| ty -= topWidth / 2; |
| w += leftWidth / 2 + (rightWidth + 1) / 2; |
| h += topWidth / 2 + (bottomWidth + 1) / 2; |
| |
| EBorderStyle topStyle = collapsedBorderStyle(topVal.style()); |
| EBorderStyle bottomStyle = collapsedBorderStyle(bottomVal.style()); |
| EBorderStyle leftStyle = collapsedBorderStyle(leftVal.style()); |
| EBorderStyle rightStyle = collapsedBorderStyle(rightVal.style()); |
| |
| bool renderTop = topStyle > BHIDDEN && !topVal.isTransparent(); |
| bool renderBottom = bottomStyle > BHIDDEN && !bottomVal.isTransparent(); |
| bool renderLeft = leftStyle > BHIDDEN && !leftVal.isTransparent(); |
| bool renderRight = rightStyle > BHIDDEN && !rightVal.isTransparent(); |
| |
| // We never paint diagonals at the joins. We simply let the border with the highest |
| // precedence paint on top of borders with lower precedence. |
| CollapsedBorders borders; |
| borders.addBorder(topVal, BSTop, renderTop, tx, ty, tx + w, ty + topWidth, topStyle); |
| borders.addBorder(bottomVal, BSBottom, renderBottom, tx, ty + h - bottomWidth, tx + w, ty + h, bottomStyle); |
| borders.addBorder(leftVal, BSLeft, renderLeft, tx, ty, tx + leftWidth, ty + h, leftStyle); |
| borders.addBorder(rightVal, BSRight, renderRight, tx + w - rightWidth, ty, tx + w, ty + h, rightStyle); |
| |
| for (CollapsedBorder* border = borders.nextBorder(); border; border = borders.nextBorder()) { |
| if (border->borderValue == *table()->currentBorderStyle()) |
| drawBorder(graphicsContext, border->x1, border->y1, border->x2, border->y2, border->side, |
| border->borderValue.color(), style()->color(), border->style, 0, 0); |
| } |
| } |
| |
| void RenderTableCell::paintBackgroundsBehindCell(PaintInfo& paintInfo, int tx, int ty, RenderObject* backgroundObject) |
| { |
| if (!backgroundObject) |
| return; |
| |
| if (style()->visibility() != VISIBLE) |
| return; |
| |
| RenderTable* tableElt = table(); |
| if (!tableElt->collapseBorders() && style()->emptyCells() == HIDE && !firstChild()) |
| return; |
| |
| if (backgroundObject != this) { |
| tx += m_x; |
| ty += m_y + m_topExtra; |
| } |
| |
| int w = width(); |
| int h = height() + borderTopExtra() + borderBottomExtra(); |
| ty -= borderTopExtra(); |
| |
| int my = max(ty, paintInfo.rect.y()); |
| int end = min(paintInfo.rect.bottom(), ty + h); |
| int mh = end - my; |
| |
| Color c = backgroundObject->style()->backgroundColor(); |
| const BackgroundLayer* bgLayer = backgroundObject->style()->backgroundLayers(); |
| |
| if (bgLayer->hasImage() || c.isValid()) { |
| // We have to clip here because the background would paint |
| // on top of the borders otherwise. This only matters for cells and rows. |
| bool shouldClip = backgroundObject->hasLayer() && (backgroundObject == this || backgroundObject == parent()) && tableElt->collapseBorders(); |
| if (shouldClip) { |
| IntRect clipRect(tx + borderLeft(), ty + borderTop(), |
| w - borderLeft() - borderRight(), h - borderTop() - borderBottom()); |
| paintInfo.context->save(); |
| paintInfo.context->clip(clipRect); |
| } |
| paintBackgrounds(paintInfo.context, c, bgLayer, my, mh, tx, ty, w, h); |
| if (shouldClip) |
| paintInfo.context->restore(); |
| } |
| } |
| |
| void RenderTableCell::paintBoxDecorations(PaintInfo& paintInfo, int tx, int ty) |
| { |
| RenderTable* tableElt = table(); |
| if (!tableElt->collapseBorders() && style()->emptyCells() == HIDE && !firstChild()) |
| return; |
| |
| int w = width(); |
| int h = height() + borderTopExtra() + borderBottomExtra(); |
| |
| if (style()->boxShadow()) |
| paintBoxShadow(paintInfo.context, tx, ty - borderTopExtra(), w, h, style()); |
| |
| // Paint our cell background. |
| paintBackgroundsBehindCell(paintInfo, tx, ty, this); |
| |
| if (!style()->hasBorder() || tableElt->collapseBorders()) |
| return; |
| |
| ty -= borderTopExtra(); |
| paintBorder(paintInfo.context, tx, ty, w, h, style()); |
| } |
| |
| #ifndef NDEBUG |
| void RenderTableCell::dump(TextStream* stream, DeprecatedString ind) const |
| { |
| *stream << " row=" << row(); |
| *stream << " col=" << col(); |
| *stream << " rSpan=" << rowSpan(); |
| *stream << " cSpan=" << colSpan(); |
| |
| RenderBlock::dump(stream,ind); |
| } |
| #endif |
| |
| } // namespace WebCore |
